¿Cuando la norma dice “Should have” es opcional? (debería tener)

ISO 9001 cláusula 0.1 declara: In this International Standard, the following verbal forms are used: — “shall” indicates a requirement (requisito) — “should” indicates a recommendation; (recomendación) — “may” indicates a permission (permiso) — “can” indicates a possibility or a capability (puede) Information marked as “NOTE” is for guidance in understanding or clarifying the associated…